Hiya, a company specializing in caller identity and spam blocking services, transitioned to Grafana Cloud to better manage costs and gain more control over their metrics. Initially using a vendor product, Hiya's team faced challenges with maintaining costs and lacked the ability to filter or aggregate metrics. The switch to Grafana Cloud Hosted Prometheus offered Hiya the industry-standard combination for monitoring Kubernetes clusters, providing the desired control and transparency over metrics. Grafana Cloud, powered by open-source Cortex, allowed Hiya to handle massive scale without managing infrastructure. Implementation involved migrating dashboards and adapting to Prometheus' query language, requiring training and support from Grafana Labs. Ultimately, the move resulted in significant cost savings, enhanced auditing capabilities, and a reduction in metrics, with Hiya's engineering teams benefiting from improved dashboards and operational insights. Looking forward, Hiya plans to integrate standardized dashboards and leverage new visualization features in Grafana, solidifying their satisfaction with the transition.